And this is an example of molecular mimicry where an antibody to a foreign pathogen starts to cross-react and damage the person's own tissue.

这是一个分子模拟的例子，即针对外来病原体的抗体，产生了交叉反应并破坏人体自身组织。

As a result, immune cells mistakenly attack and destroy the myelin sheath and this is called molecular mimicry, because from the perspective of the immune cells a host substance is mimicking a foreign protein.

因此，免疫细胞会错误地攻击、损伤髓鞘；由于自身物质和细胞外来蛋白具有相似抗原表位而导致免疫细胞攻击自身，被称为分子模拟。